Fortune 1000 company, our mail transfer agent for sending out certain mass mailings were four Macintoshes. Worse, they were never upgraded to MacOS X, because

Fortune 1000 company, our mail transfer agent for sending out certain mass mailings were four Macintoshes. Worse, they were never upgraded to MacOS X, because they were so legacy they couldn't be. They were also not officially supported by either desktop support or server support. Although server support had to get involved when our IP address space was reassigned (they got their IP addresses pre-NAT). At a Fortune 100 company I had to spend a day debugging a print job sent from an IBM mainframe in New York City to a Unix print server, out to a printer in Mumbai. At one VC funded startup, the first server the company ever bought had no backup system and could not be turned off. We had to rearrange the server room once and someone had to hold the server in the air due to the way it was plugged in as the room was rearranged. It took years to get the budget for the server to upgrade it to, the day the new server came in it was hijacked by the analytics group.